For those old enough to recall the Mdl. 53 S&W .22 CF Magnum AKA Jet. This was a fast running .22 centerfire made from necking down a .357 Mag case to take a 40 gr. .222 bullet. The Mdl. 53 could also fire the .22 rimfire with the use of chamber inserts. The hammer had a CF or RF thumb selector. These were very interesting if you were a reloader. Pushing the .22 over 2,000 FPS from a handgun in the 1960s was a trick. The Mdl. 53 like the modern FN 5.7 run into pressure problems. The Mdl. 53 "Jet" is now history. But I kept mine and still fuss with it after all these years. I have to wonder if the FN 5.7 will go the same way.

Could be a fun target pistol, varmint pistol, and practical woods gun for anything that weighs less than 100lbs. Yes, it is also a very effective anti-personnel gun. But the velocity and size don't lend themselves to carry or urban HD in my opinion. I don't think I'd ever choose the FN 5.7 as one of my primary handguns, but it could be a fun extra if your budget allows.